Tubular packing and method of producing same

Details Tubular packing and method of producing same Tubular packing and method of producing same

1998-05-26

2000-09-12

Knight, Anthony

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277627, 277591, B32B 1706

Patent

active

061166111

ABSTRACT:
There is disclosed a tubular packing which can be easily produced, and has satisfactory durability while maintaining excellent properties of exfoliated graphite such as cushioning properties and heat-resistance. There are prepared a sheet of exfoliated graphite sheet and two wire nets equal in size and shape to the sheet. The one wire net is superposed on an obverse side of the sheet in coinciding relation thereto whereas the other wire net is held in contact with a reverse side of the sheet in offset relation thereto, and this stack is curved into a tubular shape, and this tubular stack is compressed in a direction of a thickness of the sheet, thereby forming a tubular packing. Therefore, in the resultant tubular packing, the wire nets are embedded in the sheet. The wire net interconnects the opposite end edges of the sheet in a bridging manner, so that the tubular packing is continuous over the entire circumference thereof. The embedded wire nets are exposed respectively to the inner and outer surfaces of the sheet, and the wire net and the exfoliated graphite are present in a coexisting manner in each of the inner and outer peripheral surfaces of the tubular packing, and therefore the tubular packing has the excellent wear resistance and sliding properties.

REFERENCES:
patent: 4607851 (1986-08-01), Usher
patent: 5040805 (1991-08-01), Ozora
patent: 5451064 (1995-09-01), Mercuri et al.
patent: 5462291 (1995-10-01), Maeda et al.

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